There’s a pretty alarming story coming out of Philadelphia about an explosion that injured a man with a rainbow “love trumps hate” sign in his window.

Here’s what we know: the package was probably left on the stoop, rather than mailed, because it had an old bar code. The victim is Jim Alden, 62, and he sustained injuries to his face, chest, and hands. (He’s in stable condition in the hospital right now.) He opened the package in his kitchen — a manila envelope — around 4am, thinking it was a delivery of asthma medication, and that set off the explosion.

We don’t know who left the package, although police say the victim appeared to be the intended target. JoeMyGod reports that Alden is gay. Police say it’s also possible the explosion was actually a faulty asthma inhaler, and the event was some kind of freak accident.

Police Commissioner Richard Ross tells local ABC News, “The bomb squad says no question it was targeted. It was addressed to him.”